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Re: [Xen-devel] rdtscP and xen (and maybe the app-tsc answer I've been l

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Subject: Re: [Xen-devel] rdtscP and xen (and maybe the app-tsc answer I've been looking for)
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Tue, 22 Sep 2009 15:18:05 -0700
Cc: kurt.hackel@xxxxxxxxxx, "Xen-Devel \(E-mail\)" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
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On 09/22/09 13:22, Dan Magenheimer wrote:
> The reason is to improve performance while preserving
> correctness for applications that need to do tens-to-hundreds
> of thousands "timestamp reads" without changing the underlying
> OS.  Whether this is a GOOD reason is subject to interpretation,
> but it is a reason.
>   

I don't think there's anything new to add to this line of discussion.

    J

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